Temat: tonometry - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Tonometria - pomiar ciśnienia śródocznego
Autorzy:: Wojciechowska, M.
Bryla, P.K.
Powiązania:: https://bibliotekanauki.pl/articles/9942.pdf
Data publikacji:: 2011
Wydawca:: Okulistyka Weterynaryjna
Tematy:: okulistyka weterynaryjna
galka oczna
cisnienie srodgalkowe
pomiary
tonometria
tonometry
tonometry impresyjne
tonometry aplanacyjne
tonometry rebundacyjne
Opis:: Tonometry should be a routine component of an ophtalmic examination. It is an essential examination providing rapid diagnosis, especially for glaucoma or uveitis. Tonometry is noninvasive and quick and allows to take up the right treatment. To messure the intraocular pressure Schiǿtz tonometer, Tono-pen, Tonovet and air-puff tonometers can be used. Tono-pen and Tonovet are the manual devices most widely used in veterinary ophtalmology
Źródło:: Okulistyka Weterynaryjna. e-kwartalnik dla lekarzy i studentów weterynarii; 2011, 2
2082-9256
Pojawia się w:: Okulistyka Weterynaryjna. e-kwartalnik dla lekarzy i studentów weterynarii
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Raw data from Ocular Response Analyzer applied for differentiation of normal and glaucoma patients
Autorzy:: Jóźwik, Agnieszka
Asejczyk-Widlicka, Magdalena
Boszczyk, Agnieszka
Kasprzak, Henryk
Krzyżanowska-Berkowska, Patrycja
Powiązania:: https://bibliotekanauki.pl/articles/173859.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: glaucoma
intraocular pressure
Ocular Response Analyzer
raw data
tonometry
Opis:: Purpose: Presented study describes new parameters calculated from the Ocular Response Analyzer (ORA) raw data. Such an approach can increase the applicability of the ORA in ophthalmic diagnosis. Among many proposed and examined by us parameters from raw data of the air pressure and applanation curves, only a few were chosen and then applied for characterizing a selected group of patients. Methods: The study included healthy subjects in a control group and patients divided into 2 groups: suspect and glaucoma. A series of four ORA measurements were taken from each subject. The raw ORA data were numerically analyzed and new parameters were calculated from the ORA curves for each measurement. Comparative analysis was carried out for the newly proposed parameters (and original parameters from the ORA device). Results: This interesting finding is that the new parameters showed a statistically significant ability to distinguish the glaucoma suspect group from healthy and glaucomatous patients. Moreover comparable or higher repeatability than for IOPg and CH was obtained. Conclusion: Raw data from the ORA enables definition and numerical analysis of new parameters, characterizing every measurement, which can be successfully used for describing an individual eye and differentiating between some specific groups of patients.
Źródło:: Optica Applicata; 2020, 50, 1; 147-159
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Applanation pressure function in Goldmann tonometry and its correction
Autorzy:: Śródka, W.
Powiązania:: https://bibliotekanauki.pl/articles/306833.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: eyeball
biomechanical model
tonometry
IOP
correction factors
gałka oczna
tonometria
korekcja
model biomechaniczny
Opis:: So far applanation tonometry has not worked out any theoretical basis for correcting the result of intraocular pressure measurement carried out on a cornea with noncalibration dimensions by means of the Goldmann tonometer. All the tables of instrument reading corrections for cornea thickness or cornea curvature radius are based exclusively on measurements. This paper represents an attempt at creating a mechanical description of corneal apex deformation in Goldmann applanation tonometry. The functional dependence between intraocular pressure and the pressure exerted on the corneal apex by the tonometer was determined from a biomechanical model. Numerical GAT simulations, in which this function was also interrelated with the cornea’s curvature radius and thickness were run and a constitutive equation for applanation tonometry, i.e. a full analytical description of intraocular pressure as a function of the above variables, was derived on this basis. The correction factors were defined and an algorithm for correcting the measured pressure was formulated. The presented formalism puts the results of experimental tonometry in new light. Analytical correction factors need not to come exclusively from measurements. A geometric interdependence between them and their dependence on pressure have been revealed. The theoretical description of applanation tonometry contained in the constitutive equation consists of a pressure function developed for a cornea with calibration dimensions and a coefficient correcting this calibration function, dependent exclusively on the cornea’s actual thickness and curvature radius. The calibration function is a generalization of the Imbert–Fick law.
Źródło:: Acta of Bioengineering and Biomechanics; 2013, 15, 3; 97-106
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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